Paste a column of numbers and get E.164 back with the bad ones flagged.
Free for 10 runs a day.
One phone number written five ways
(415) 555-0199 and +1 415 555 0199 are one line. A CRM compares them as text. The duplicate survives.
This tool rewrites every phone number to E.164 so the copies line up.
Add the country code the import left out
Local numbers arrive with no country code. A dialer or an SMS step rejects them. Each CRM guesses a different country.
Pick a default country and every local phone number gets its code.
Use it from a script or an AI agent
MCP https://dedupe.ly/tools/mcp every free tool in one connector (this one: format_phone_numbers)
POST https://dedupe.ly/tools/api/phone-number-formatter
{ "numbers": ["(415) 555-0199", "020 7946 0958"], "defaultCountry": "US" }
Docs https://dedupe.ly/tools/api/openapi.jsonQuestions about phone number formats
The international standard for a phone number: a plus sign, the country code and the number, with no spaces and at most 15 digits. +14155550199 is E.164.
E.164 is digits only after the plus sign. International format adds spaces: +1 415-555-0199. National format is how the number is dialled at home: (415) 555-0199.
The length and format rules of 44 countries. A number with a plus sign from any other country still gets its E.164 form.
Its length does not fit the country, it contains letters, or it is a North American number whose area code or exchange cannot exist.
They are in ranges set aside for films and tests, such as 555-0100 to 555-0199 in North America. A real customer never has one.
Excel reads the column as a number. Import the CSV with that column set to Text, or open the file in a text editor.
A plus sign, the country code and the number, such as +12125550123, with ext and the extension after it.
300 phone numbers a file and ten runs a day, free.
Get started for free
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Larry D
Pipedrive User
Pipedrive Marketplace Running CRM cleanup for clients? See the Partner Program
